# CVE-2026-45245: Summarize < 0.15.1 Unauthorized Daemon Request via Untrusted Events

> Malicious web pages can trigger authenticated daemon requests to internal endpoints via synthetic hover events, exposing sensitive data.

- **Severity:** Medium 4.6 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 18 May 2026
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-2r69-qgv3-hr65

## What is CVE-2026-45245?

CVE-2026-45245 is a medium-severity server-side request forgery vulnerability in steipete summarize, published on 18 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Summarize prior to 0.15.1 contains a vulnerability in the hover summary feature that allows malicious pages to dispatch synthetic mouseover events over attacker-controlled links, causing the extension to make authenticated daemon requests using stored tokens without verifying event trustworthiness. Attackers can place local or private-network URLs behind hoverable links to route authenticated requests through the daemon, potentially accessing sensitive internal endpoints when users interact with attacker-controlled content.

Weakness: CWE-940 (Improper Verification of Source of a Communication Channel), CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-45245?

2 open source packages ship an affected version, including @steipete/summarize. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@steipete/summarize` | npm | All versions | 0.15.1 |
| `@steipete/summarize` | npm | All versions | 0.15.1 |

Products: Steipete Summarize.

## How do I fix CVE-2026-45245?

Upgrade @steipete/summarize to 0.15.1 or later.

## Is CVE-2026-45245 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45245 exists.

## Other vulnerabilities in steipete summarize

- [CVE-2026-45242](https://insights.sbomify.com/CVE-2026-45242/): Summarize < 0.15.1 Path Traversal via slidesDir Parameter (high 7.1)
- [CVE-2026-45246](https://insights.sbomify.com/CVE-2026-45246/): Summarize < 0.15.1 Insecure File Permissions Information Disclosure (medium 6.8)
- [CVE-2026-45243](https://insights.sbomify.com/CVE-2026-45243/): Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script (medium 5.3)
- [CVE-2026-45244](https://insights.sbomify.com/CVE-2026-45244/): Summarize < 0.15.1 Unapproved Browser Automation Execution (low 2.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45245 and fix it if it is affected.

What it is: CVE-2026-45245 is a medium-severity server-side request forgery vulnerability in steipete summarize, published on 18 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45245 exists.

Affected packages and fixed versions:
- @steipete/summarize (npm): affected all versions; fixed in 0.15.1
- @steipete/summarize (npm): affected all versions; fixed in 0.15.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-45245/ (Markdown: https://insights.sbomify.com/CVE-2026-45245/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45245
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45245
- OSV: https://osv.dev/vulnerability/CVE-2026-45245

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45245/
Summaries are generated and may contain mistakes; the official description above is the record.